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Diffstat (limited to 'Documentation/filesystems/cramfs.txt')
| -rw-r--r-- | Documentation/filesystems/cramfs.txt | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/filesystems/cramfs.txt b/Documentation/filesystems/cramfs.txt new file mode 100644 index 000000000..a408b8828 --- /dev/null +++ b/Documentation/filesystems/cramfs.txt @@ -0,0 +1,13 @@ + + Cramfs - cram a filesystem onto a small ROM + +cramfs is designed to be simple and small, and to compress things well. + +It uses the zlib routines to compress a file one page at a time, and +allows random page access. The meta-data is not compressed, but is +expressed in a very terse representation to make it use much less +diskspace than traditional filesystems. + +You can't write to a cramfs filesystem (making it compressible and +compact also makes it _very_ hard to update on-the-fly), so you have to +create the disk image with the "mkcramfs" utility in scripts/cramfs. |